5P2Y

Automated refinement of diffraction data obtained from an endothiapepsin crystal treated with fragment 151

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	BESSY BEAMLINE 14.2
Synchrotron site	BESSY
Beamline	14.2
Temperature [K]	100
Detector technology	CCD
Collection date	2013-01-23
Detector	MARMOSAIC 225 mm CCD
Wavelength(s)	0.91841
Spacegroup name	P 1 21 1
Unit cell lengths	45.262, 73.015, 52.695
Unit cell angles	90.00, 109.34, 90.00

Refinement procedure

Resolution	42.708 - 1.639
R-factor	0.1379
Rwork	0.136
R-free	0.18000
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4y5l
RMSD bond length	0.008
RMSD bond angle	1.151
Data reduction software	XDS
Data scaling software	XDS
Phasing software	PHASER (2.5.7)
Refinement software	PHENIX

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	42.708		1.740
High resolution limit [Å]	1.640	4.890	1.640
Rmerge	0.093	0.030	0.527
Rmeas	0.106	0.034	0.605
Total number of observations	167146
Number of reflections	39693	1540	6379
<I/σ(I)>	14.54	41.1	3.33
Completeness [%]	99.7	99	99.4
Redundancy	4.21
CC(1/2)	0.997	0.998	0.816

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	4.6	290	0.1 M ammonium acetate, 0.1 M sodium acetate, 24-30% PEG 4000; crystal obtained by streak-seeding and soaked with 90 mM of fragment 151 with the SMILES code CN(CN1C=NN=C1C#N)CC1=CC=CC=C1C